Truss rod nut for Fender American Standard P

[tranceFusion]

I am trying to figure out the correct part number for a replacement truss rod nut for a Fender 2008 Am Std P.

The hex wrench size included with the case candy, as well as the current nut, is 3/16" which matches the fender serial lookup.

I ordered Part No. 0038454049 which is a 3/16" bass truss rod nut, but when it arrived, both the barrel itself and the threaded hole are too small.

I see that there is a Part No. 0038443000 which most 3rd party sites say is a 5/16" truss rod nut. This part is not found on fender.com in the US but if I change regions I see a listing for this part on their site saying that it is 3/16" hex.

I'm speculating that maybe they switched this truss rod nut form 3/16" to 5/16" at some point since they were stripping too easily, and that the threaded side would be correct? But I am not sure.

Any help is appreciated, thanks!

 

[bigtone23]

I dunno, current American Professional basses still use the 3/16" truss rod hex wrench. I have MIA and MIM Fender basses that were made from 1997-2014 and all use 3/16" hex wrenches.
This is also the standard for the MIM guitars. However, I did get a factory new MIM Subsonic Strat baritone guitar neck in 2020 that uses a 4mm truss rod hex wrench. This is the first time in my experience that MIM varied from the 3/16".

 

[Achtelbeat]

Hi, went through this with an 1996 Am Std Fretless Precision.
Part no. 0048688000, but nowhere to be found.

In the end I put a 12-28 thread in a slotted nut with matching outer diameter.
Currently there seems one on Ebay though.

Hope this helps.
Regards
Mario